FR2752992B1 - PROTECTION DEVICE FOR STORED DATA - Google Patents

PROTECTION DEVICE FOR STORED DATA

Info

Publication number
FR2752992B1
FR2752992B1 FR9610588A FR9610588A FR2752992B1 FR 2752992 B1 FR2752992 B1 FR 2752992B1 FR 9610588 A FR9610588 A FR 9610588A FR 9610588 A FR9610588 A FR 9610588A FR 2752992 B1 FR2752992 B1 FR 2752992B1
Authority
FR
France
Prior art keywords
protection device
stored data
stored
data
protection
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
FR9610588A
Other languages
French (fr)
Other versions
FR2752992A1 (en
Inventor
Sebastien Zink
Jean Francois Leon
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
STMicroelectronics SA
Original Assignee
SGS Thomson Microelectronics SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by SGS Thomson Microelectronics SA filed Critical SGS Thomson Microelectronics SA
Priority to FR9610588A priority Critical patent/FR2752992B1/en
Priority to US08/916,054 priority patent/US5787040A/en
Publication of FR2752992A1 publication Critical patent/FR2752992A1/en
Application granted granted Critical
Publication of FR2752992B1 publication Critical patent/FR2752992B1/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11C—STATIC STORES
    • G11C7/00—Arrangements for writing information into, or reading information out from, a digital store
    • G11C7/24—Memory cell safety or protection circuits, e.g. arrangements for preventing inadvertent reading or writing; Status cells; Test cells
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11C—STATIC STORES
    • G11C5/00—Details of stores covered by group G11C11/00
    • G11C5/14—Power supply arrangements, e.g. power down, chip selection or deselection, layout of wirings or power grids, or multiple supply levels
    • G11C5/143—Detection of memory cassette insertion or removal; Continuity checks of supply or ground lines; Detection of supply variations, interruptions or levels ; Switching between alternative supplies
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11C—STATIC STORES
    • G11C7/00—Arrangements for writing information into, or reading information out from, a digital store
    • G11C7/22—Read-write [R-W] timing or clocking circuits; Read-write [R-W] control signal generators or management 
FR9610588A 1996-08-27 1996-08-27 PROTECTION DEVICE FOR STORED DATA Expired - Fee Related FR2752992B1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
FR9610588A FR2752992B1 (en) 1996-08-27 1996-08-27 PROTECTION DEVICE FOR STORED DATA
US08/916,054 US5787040A (en) 1996-08-27 1997-08-21 Device for the protection of stored data

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR9610588A FR2752992B1 (en) 1996-08-27 1996-08-27 PROTECTION DEVICE FOR STORED DATA

Publications (2)

Publication Number Publication Date
FR2752992A1 FR2752992A1 (en) 1998-03-06
FR2752992B1 true FR2752992B1 (en) 1998-10-30

Family

ID=9495298

Family Applications (1)

Application Number Title Priority Date Filing Date
FR9610588A Expired - Fee Related FR2752992B1 (en) 1996-08-27 1996-08-27 PROTECTION DEVICE FOR STORED DATA

Country Status (2)

Country Link
US (1) US5787040A (en)
FR (1) FR2752992B1 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19616053A1 (en) * 1996-04-23 1997-10-30 Bosch Gmbh Robert Method for operating a control device with a programmable memory device
FR2752993B1 (en) * 1996-08-27 1998-12-04 Sgs Thomson Microelectronics DEVICE FOR PROTECTING STORED DATA USING A TIMING CIRCUIT
WO1998022879A1 (en) * 1996-11-15 1998-05-28 Philips Electronics N.V. A protection method against eeprom-directed intrusion into a mobile communication device that has a processor, and a device having such protection mechanism
US6711701B1 (en) * 2000-08-25 2004-03-23 Micron Technology, Inc. Write and erase protection in a synchronous memory
US8171192B2 (en) * 2005-09-20 2012-05-01 Qualcomm Incorporated Hardware-assisted device configuration detection
US10305470B1 (en) * 2018-07-09 2019-05-28 Winbond Electronics Corp. Circuit for recovering from power loss and electronic device using the same circuit and method thereof

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57174720A (en) * 1981-04-21 1982-10-27 Toshiba Corp Data processor
US4580246A (en) * 1983-11-02 1986-04-01 Motorola, Inc. Write protection circuit and method for a control register
JPS63755A (en) * 1986-06-20 1988-01-05 Fujitsu Ltd Semiconductor storage device
US5315549A (en) * 1991-06-11 1994-05-24 Dallas Semiconductor Corporation Memory controller for nonvolatile RAM operation, systems and methods
US5430882A (en) * 1992-07-14 1995-07-04 Halliburton Company Apparatus and method for protecting data stored in memory
US5557576A (en) * 1995-07-28 1996-09-17 Micron Quantum Devices, Inc. Method and apparatus for monitoring illegal conditions in a nonvolatile memory circuit
US5668760A (en) * 1996-04-23 1997-09-16 Intel Corporation Nonvolatile memory with a write protection circuit

Also Published As

Publication number Publication date
FR2752992A1 (en) 1998-03-06
US5787040A (en) 1998-07-28

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Legal Events

Date Code Title Description
ST Notification of lapse

Effective date: 20070430